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| - Ethene−Norbornene Copolymerization with Homogeneous Metalloceneand Half-Sandwich Catalysts: Kinetics and Relationships betweenCatalyst Structure and Polymer Structure. 3. CopolymerizationParameters and Copolymerization Diagrams
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| - The copolymerization parameters of the ethene−norbornene copolymerization using variousmetallocene and half-sandwich catalysts were determined on the basis of composition data with lineargraphical methods: Aside from r1 and r2, values for r11 and r21 could be determined in the case of alternatingcopolymerizations. In this connection, r21 differs significantly from catalyst to catalyst and reflects thedifferent tendency of each catalyst to produce copolymers with an alternating monomer sequence. Themaximum norbornene contents in the copolymer could be achieved by use of sterically less hinderedmetallocene catalysts. As an exception to this, the half-sandwich catalysts produced copolymers withsurprisingly low norbornene contents.
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